forked from 0x2620/pandora
174 lines
4.7 KiB
Python
174 lines
4.7 KiB
Python
# -*- coding: utf-8 -*-
|
|
# vi:si:et:sw=4:sts=4:ts=4
|
|
from django.db.models import Q, Manager
|
|
from django.conf import settings
|
|
|
|
from ox.django.query import QuerySet
|
|
import ox
|
|
|
|
def parseCondition(condition, user):
|
|
'''
|
|
condition: {
|
|
value: "war"
|
|
}
|
|
or
|
|
condition: {
|
|
key: "year",
|
|
value: "1970-1980,
|
|
operator: "!="
|
|
}
|
|
'''
|
|
k = condition.get('key', 'name')
|
|
k = {
|
|
'user': 'annotations__user__username',
|
|
'place': 'annotations__places__id',
|
|
'event': 'annotations__events__id',
|
|
'in': 'start',
|
|
'out': 'end',
|
|
'id': 'public_id',
|
|
}.get(k, k)
|
|
if not k:
|
|
k = 'name'
|
|
v = condition['value']
|
|
op = condition.get('operator')
|
|
if not op:
|
|
op = ''
|
|
public_layers = [l['id']
|
|
for l in filter(lambda l: not l.get('private', False),
|
|
settings.CONFIG['layers'])]
|
|
if k in public_layers:
|
|
return parseCondition({'key': 'annotations__value',
|
|
'value': v,
|
|
'operator': op}, user) \
|
|
& parseCondition({'key': 'annotations__layer__name',
|
|
'value': k,
|
|
'operator': '=='}, user)
|
|
|
|
if op.startswith('!'):
|
|
op = op[1:]
|
|
exclude = True
|
|
else:
|
|
exclude = False
|
|
if op == '-':
|
|
q = parseCondition({'key': k, 'value': v[0], 'operator': '>='}, user) \
|
|
& parseCondition({'key': k, 'value': v[1], 'operator': '<'}, user)
|
|
if exclude:
|
|
return ~q
|
|
else:
|
|
return q
|
|
if k.endswith('__id'):
|
|
v = ox.from26(v)
|
|
if isinstance(v, bool): #featured and public flag
|
|
key = k
|
|
elif k in ('lat', 'lng', 'area', 'south', 'west', 'north', 'east', 'matches',
|
|
'id') or k.endswith('__id'):
|
|
key = "%s%s" % (k, {
|
|
'>': '__gt',
|
|
'>=': '__gte',
|
|
'<': '__lt',
|
|
'<=': '__lte',
|
|
}.get(op, ''))
|
|
else:
|
|
key = "%s%s" % (k, {
|
|
'>': '__gt',
|
|
'>=': '__gte',
|
|
'<': '__lt',
|
|
'<=': '__lte',
|
|
'==': '__iexact',
|
|
'=': '__icontains',
|
|
'^': '__istartswith',
|
|
'$': '__iendswith',
|
|
}.get(op, '__icontains'))
|
|
|
|
key = str(key)
|
|
if exclude:
|
|
q = ~Q(**{key: v})
|
|
else:
|
|
q = Q(**{key: v})
|
|
return q
|
|
|
|
def parseConditions(conditions, operator, user):
|
|
'''
|
|
conditions: [
|
|
{
|
|
value: "war"
|
|
}
|
|
{
|
|
key: "year",
|
|
value: "1970-1980,
|
|
operator: "!="
|
|
},
|
|
{
|
|
key: "country",
|
|
value: "f",
|
|
operator: "^"
|
|
}
|
|
],
|
|
operator: "&"
|
|
'''
|
|
conn = []
|
|
for condition in conditions:
|
|
if 'conditions' in condition:
|
|
q = parseConditions(condition['conditions'],
|
|
condition.get('operator', '&'), user)
|
|
if q:
|
|
conn.append(q)
|
|
pass
|
|
else:
|
|
conn.append(parseCondition(condition, user))
|
|
if conn:
|
|
q = conn[0]
|
|
for c in conn[1:]:
|
|
if operator == '|':
|
|
q = q | c
|
|
else:
|
|
q = q & c
|
|
return q
|
|
return None
|
|
|
|
|
|
|
|
class ClipManager(Manager):
|
|
|
|
def get_query_set(self):
|
|
return QuerySet(self.model)
|
|
|
|
def find(self, data, user):
|
|
'''
|
|
query: {
|
|
conditions: [
|
|
{
|
|
value: "war"
|
|
}
|
|
{
|
|
key: "year",
|
|
value: "1970-1980,
|
|
operator: "!="
|
|
},
|
|
{
|
|
key: "country",
|
|
value: "f",
|
|
operator: "^"
|
|
}
|
|
],
|
|
operator: "&"
|
|
}
|
|
'''
|
|
|
|
#join query with operator
|
|
qs = self.get_query_set()
|
|
|
|
conditions = parseConditions(data.get('query', {}).get('conditions', []),
|
|
data.get('query', {}).get('operator', '&'),
|
|
user)
|
|
if conditions:
|
|
qs = qs.filter(conditions)
|
|
if 'keys' in data:
|
|
public_layers = [l['id']
|
|
for l in filter(lambda l: not l.get('private', False),
|
|
settings.CONFIG['layers'])]
|
|
filter_layers = filter(lambda k: k in public_layers, data['keys'])
|
|
if filter_layers:
|
|
qs = qs.filter(annotations__layer__name__in=filter_layers)
|
|
qs = qs.distinct()
|
|
return qs
|